/**
 * Created with IntelliJ IDEA
 * Description:
 * User: SEKI TOMOKI
 * Date: 2023-09-30
 * Time: 23:40
 */
import java.util.Scanner;
// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextInt()) { // 注意 while 处理多个 case
            int n = in.nextInt();

            int tmp = n;
            int numOfDigit = 1;
            while(tmp >= 10) {
                numOfDigit++;
                tmp /= 10;
            }

            if(numOfDigit == 1) {
                System.out.println(n);//println的底层就是toString
            }else {
                for(int i = 0; i < numOfDigit; i++) {
                    System.out.print(n % 10);
                    n /= 10;
                }
                System.out.println();
            }
        }

    }
}